<section class="article">
    <header class="header">
      <h1>我是文章标题</h1>
      <section class="tool">
        <a class="javascript:;">按钮一</a>
        <a class="javascript:;">按钮二</a>
      </section>
    </header>
    <article class="main">
      <p>我是文章正文</p>
    </article>
    <footer class="guidance">我是文章导读</footer>
  </section>